WhatsApp has become a vital tool for everyday communication, offering an easy way to stay in touch with friends and colleagues worldwide. With over 2.78 billion monthly active users across 180 countries and more than 140 billion messages exchanged daily, it stands as the world’s leading mobile messaging app.
But its popularity also makes it a target for hackers and scammers. To protect yourself, it’s important to understand how WhatsApp hacking works.
Have you ever been targeted by a scam on WhatsApp?
Cybercriminals use various tactics such as tricking users into sharing verification codes, installing spyware, distributing malware through attachments, or even cloning devices or accounts. These attacks typically succeed only if the victim interacts with the attacker—by clicking links, downloading files, or responding to suspicious messages. The safest move when receiving something suspicious is to report and delete it.
Here are the most common hacking methods used to steal data, spread malware, or launch scams on WhatsApp:
1. Social Engineering – WhatsApp Number Hijack
This method involves manipulating people into revealing sensitive details like verification codes. Hackers try to register your number on their own device, triggering a verification code sent to your phone. They may then pose as a trusted contact and ask you to share the code.
Protection: Never share verification codes, even if someone you know appears to request them. Doing so gives attackers full access to your account.
2. WhatsApp Forward Call Attack
Hackers trick victims into dialing special numbers with MMI codes, causing incoming calls to be forwarded to the attacker’s phone. They then register WhatsApp with the victim’s number and request a code via call.
Protection: Ignore requests to dial unknown numbers or respond to strange messages and calls.
3. WhatsApp Web Exploits
Hackers create fake QR codes mimicking the login process of WhatsApp Web. Scanning one of these can hand over your credentials.
Protection: Always verify the authenticity of QR codes before scanning. Tools like Bitdefender Scamio can help confirm legitimacy.
4. WhatsApp Spyware
Malware installed via malicious links, third-party apps, or attachments can record and forward your WhatsApp activity to attackers.
Protection: Use mobile security software that blocks malicious apps and links, and regularly review app permissions for anything suspicious.
5. Dark Web Exploits
Personal information, including phone numbers and hacking tools, are traded on the Dark Web, enabling fraudsters to infiltrate accounts and target victims.
Protection: Monitor whether your personal data is exposed online with digital identity protection services, and reduce your online footprint.
Case Example
One user, Faustin, received strange calls from a Swedish number. After picking up and noticing missing files on his phone, he realized he had been hacked.
Signs of a Hacked WhatsApp
- Unrecognized devices logged into your account (check via Linked Devices in WhatsApp).
- Receiving unexpected verification codes, strange activity, or reports from friends about messages you didn’t send.
- Reduced phone performance, crashes, or fast battery drain caused by hidden malicious apps.
How to Secure Your WhatsApp
- Enable Two-Factor Authentication (2FA): Go to Settings > Account > Two-Step Verification and activate it.
- Stay alert to scams: Be cautious with calls, links, and files from unknown contacts.
- Add Bitdefender Scamio: This AI tool analyzes suspicious texts, links, and images. It’s free to use on WhatsApp, web browsers, and Facebook Messenger.
